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58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
''' Jottings to work out format for __function_workspace__ matrix at end
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of mat file.
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'''
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from __future__ import division, print_function, absolute_import
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import os.path
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import sys
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import io
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from numpy.compat import asstr
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from scipy.io.matlab.mio5 import (MatlabObject, MatFile5Writer,
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MatFile5Reader, MatlabFunction)
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test_data_path = os.path.join(os.path.dirname(__file__), 'data')
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def read_minimat_vars(rdr):
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rdr.initialize_read()
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mdict = {'__globals__': []}
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i = 0
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while not rdr.end_of_stream():
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hdr, next_position = rdr.read_var_header()
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name = asstr(hdr.name)
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if name == '':
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name = 'var_%d' % i
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i += 1
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res = rdr.read_var_array(hdr, process=False)
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rdr.mat_stream.seek(next_position)
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mdict[name] = res
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if hdr.is_global:
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mdict['__globals__'].append(name)
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return mdict
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def read_workspace_vars(fname):
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fp = open(fname, 'rb')
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rdr = MatFile5Reader(fp, struct_as_record=True)
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vars = rdr.get_variables()
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fws = vars['__function_workspace__']
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ws_bs = io.BytesIO(fws.tostring())
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ws_bs.seek(2)
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rdr.mat_stream = ws_bs
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# Guess byte order.
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mi = rdr.mat_stream.read(2)
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rdr.byte_order = mi == b'IM' and '<' or '>'
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rdr.mat_stream.read(4) # presumably byte padding
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mdict = read_minimat_vars(rdr)
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fp.close()
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return mdict
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def test_jottings():
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# example
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fname = os.path.join(test_data_path, 'parabola.mat')
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ws_vars = read_workspace_vars(fname)
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